US5023285AExpiredUtility

Bis (tri-tertiary-alkylphenoxy) diphosphaspiroundecanes

79
Assignee: G E SPECIALTY CHEMICALSPriority: Jul 25, 1988Filed: Jul 25, 1988Granted: Jun 11, 1991
Est. expiryJul 25, 2008(expired)· nominal 20-yr term from priority
Inventors:William E. Horn, Jr.
C07F 9/65746C08K 5/527C08K 5/52
79
PatentIndex Score
17
Cited by
20
References
10
Claims

Abstract

A composition is provided which comprises a 3,9-bis (2,4,6-tri-t-alkylphenoxy)-2,4,8,10-tetroxa-3,9-diphosphaspiro[5.5]undecane, and polymer compositions are provided which include a polymer and an effective amount of one or more 3,9-bis(2,4,6-tri-t-alkylphenoxy)-2,4,8,10-tetroxa-3,9-diphosphaspiro[5.5]undecane.

Claims

exact text as granted — not AI-modified
We claim: 
     
       1. A composition particularly useful for improving the melt flow stability and/or the color stability of polymers comprising a diphosphaspiroundecane of the general formula: ##STR3## wherein each of R 1 , R 2 , R 3 , R 4 , R 5  and R 6 , is a tertiary-alkyl moiety. 
     
     
       2. The composition of claim 1 wherein R 1 , R 2 , R 3 , R 4 , R 5  and R 6  are independently selected from the group consisting of C 4  to about C 12  tertiary-alkyl moieties. 
     
     
       3. The composition of claim 2 wherein R 1 , R 2 , R 3 , R 4 , R 5 , and R 6  are independently selected from the group consisting of t-butyl, t-pentyl, 1,1,4,4-tetramethyl butyl, t-dodecyl and 1-methylcyclohexyl moieties. 
     
     
       4. The composition of claim 3 wherein R 1 , R 2 , R 3 , R 4 , R 5 , and R 6  are t-butyl moieties. 
     
     
       5. The composition of claim 1 wherein R 1 , R 2 , R 3 , R 4 , R 5 , and R 6  are selected to be the same tertiary-alkyl moiety. 
     
     
       6. A polymer composition comprising a polymer and a sufficient amount of the diphosphaspiroundecane of claim 1 to improve the melt flow stability and/or the color stability of the polymer. 
     
     
       7. The composition of claim 6 wherein the polymer is selected from the group consisting of polyamide, polyolefin, polyester, polyphenylene ether, polycarbonate, polyvinylchlorides and styrenic resins, and mixtures thereof. 
     
     
       8. The composition of claim 7 wherein the polymer is selected from the group consisting of polyethylene, polyamide 6, polyamide 6/6, 6/10, 6/9, 6/12 and 4/6, polypropylene, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polyphenylene ether, polystyrene, polyvinylchloride, impact polystyrene, and ABS-type graft copolymer resins, and mixtures thereof. 
     
     
       9. The composition of claim 6 wherein said diphosphaspiroundecane compound is present in an amount equal to about 0.01 to about 2 phr. 
     
     
       10. The composition of claim 6 wherein said diphosphaspiroundecane is present in an amount equal to about 0.01 to about 1 phr.

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